101020587 Seeed Studio

MP3120 1.2A, 1.1MHz Synchronous Boost Converter with Output Disconnect The Future of Analog IC Technology DESCRIPTION FEATURES The MP3120 is a high efficiency synchronous, Up to 96% Efficiency current mode step-up converter. The device True Output Disconnect from Input can boost a single cell or two cells AA battery Inrush Current Limiting and Internal Soft- up to 5V. Start The MP3120 can start up from an input voltage 0.8V Low Voltage Start-Up as low as 0.8V and provide in-rush current Internal Synchronous Rectifier limiting as well as output short circuit protection. Current Mode Control with Internal The integrated P-Channel synchronous rectified Compensation switch provides improved efficiency and Short-Circuit Protection eliminates the need of an external schottky 1.1MHz Fixed Frequency Switching diode. The P-MOS will disconnect the output 0.8V to 5V Input Range from the input when EN is low. This output 2.5V to 5V Output Range disconnect feature allows the output to be Tiny External Components completely discharged, thus allowing the part to Small 6-lead ThinSOT Package draw less than 1uA off current in shutdown mode. APPLICATION The 1.1MHz switching frequency allows for Single-cell, Two-cell and Three-cell Alkaline, smaller external components the internal NiCd or NiMH or single-cell Li Battery compensation and soft start minimize the Consumer Products external component count, all helps to produce MP3 Players a compact solution for a wide range of load Wireless Mouse current. Audio Recorders The MP3120 features an integrated power MOSFET that supports up to 5V output and a All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Quality Assurance. typical 1.2A switch current. MPS and The Future of Analog IC Technology are Registered Trademarks The device also can maintain the output voltage of Monolithic Power Systems, Inc. regulated even when the input voltage is above the output voltage. The MP3120 is offered in a 6-lead ThinSOT23 package TYPICAL APPLICATION L1 Efficiency 4.7 H V =3.3V OUT 1 VIN=3V 100 6 5 SW IN VIN OUT VOUT 80 0.8V-5V C1 3.3V VIN=1V V =2V IN 10 F R1 60 C2 MP3120 V =4.4V 1M IN 10 F 40 3 4 ON OFF FB EN 20 GND R2 0 640k 2 1 10 100 1000 OUTPUT CURRENT (mA) MP3120 Rev. 1.0 www.MonolithicPower.com 1 6/30/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved. EFFICIENCY (%)MP3120-1.2A, 1.1MHz SYNCHRONOUS BOOST ORDERING INFORMATION Part Number* Package Top Marking Free Air Temperature (T ) A MP3120DJ TSOT23-6 9A -40 C to + 85C * For Tape & Reel, add suffix Z (eg. MP3120DJZ). For RoHS compliant packaging, add suffix LF (eg. MP3120DJLFZ) PACKAGE REFERENCE TOP VIEW SW 1 6 IN GND 2 5 OUT FB 3 4 EN (4) (1) Thermal Resistance ABSOLUTE MAXIMUM RATINGS JA JC TSOT23-6..220....110C /W V Voltage ........................................ -0.3V to 5V IN SW Voltage ....................................... -0.3V to 7V Notes: EN, FB Voltage ................................. -0.3V to 6V 1) Exceeding these ratings may damage the device. V Voltage ..................................... -0.3V to 6V 2) The maximum allowable power dissipation is a function of the OUT (2) maximum junction temperature T (MAX), the junction-to- J Continuous Power Dissipation (T =+25 C) A ambient thermal resistance , and the ambient temperature JA ........................................................... 0.45W T . The maximum allowable continuous power dissipation at A any ambient temperature is calculated by P (MAX) = (T D J Operation temperature T ......... -40C to + 85 C A (MAX)-T )/ . Exceeding the maximum allowable power A JA Junction temperature T .......... -40C to + 125 C J dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal Lead temperature ..................................... 250 C shutdown circuitry protects the device from permanent Storage temperature ............... -65C to + 150 C damage. 3) The device is not guaranteed to function outside of its (3) Recommended Operating Conditions operating conditions. 4) Measured on JESD51-7, 4-layer PCB. Supply Voltage V ............................. 0.8V to 5V IN Operating Junct. Temp (T ) ..... 40 C to +125 C J MP3120 Rev. 1.0 www.MonolithicPower.com 2 6/30/2017 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. 2017 MPS. All Rights Reserved.